利用python中re模块匹配字符串不成功问题

A capture group can only capture one thing, and there's no way to create a dynamic number of capture groups. When you repeat a capturing group, in most flavors, only the last capture is kept; any previous capture is overwritten. In short, it's impossible to do all of this in the re engine. You cannot generate more groups dynamically. It will all put it in one group.

refer: www.regular-expressions.info/captu...

import re

text="""
<a src="111">111</a> <a src="222">222</a> <p title="test1">test1</p>
<a src="333">333</a> <p title="test2">test2</p>
<a src="444">444</a> <a src="5">5</a> <a src="6">6</a> <p title="test3">test3</p>
<a src="7">7</a>
"""

regex = re.compile(r'<(a|p)\s+?.+?>(.+?)<\/\1>', re.S)
result, tmp = [], ()
for tag, text in regex.findall(text):
    if tag in ('a', 'p'):
        tmp = tmp + (text,)
        if tag == 'p':
            result.append(tmp)
            tmp = ()

print(result)

[('111', '222', 'test1'), ('333', 'test2'), ('444', '5', '6', 'test3')]

谢谢。